JPS55117521A - Press bending and spinning method - Google Patents
Press bending and spinning methodInfo
- Publication number
- JPS55117521A JPS55117521A JP2347679A JP2347679A JPS55117521A JP S55117521 A JPS55117521 A JP S55117521A JP 2347679 A JP2347679 A JP 2347679A JP 2347679 A JP2347679 A JP 2347679A JP S55117521 A JPS55117521 A JP S55117521A
- Authority
- JP
- Japan
- Prior art keywords
- blank holder
- bed
- spite
- clearance
- thickness
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Bending Of Plates, Rods, And Pipes (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
PURPOSE: To restrict generation of wrinkle and deformation in spite of severe working conditions, and to greatly improve the workability, by holding the clearance between the blank holder and the bending bed a little larger than the thickness of material, and by smoothing the slip-in of material during the work.
CONSTITUTION: The clearance tO between the blank holder 4 and the bending bed 7 for pinching the material 11 is made a little larger than thickness (t) of the sheet 11 of material 1 in spite of the pushing action of the blank holder 4. That is, the coned disc spring 12 is inserted into the lower holder 8 for supporting the bed 7; and the spacer pin 13 permitted to strike the blank holder 4 is supported by the spring 12 so as to project out of the bed 7 upward. The blank holder 4 is pushed down to strike the pin 13, and the clearance tO is held a little larger than thickness (t) by the elastic force of the spring 12 in spite of the pushing action of the blank holder 4. As a result, at pressing the material 11 with the bending punch 6, the slip- in of material 11 can be smoothed, so that the material 11 is prevented from generation of cracks, etc.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2347679A JPS55117521A (en) | 1979-03-02 | 1979-03-02 | Press bending and spinning method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2347679A JPS55117521A (en) | 1979-03-02 | 1979-03-02 | Press bending and spinning method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55117521A true JPS55117521A (en) | 1980-09-09 |
Family
ID=12111577
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2347679A Pending JPS55117521A (en) | 1979-03-02 | 1979-03-02 | Press bending and spinning method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55117521A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100436994B1 (en) * | 2001-05-17 | 2004-06-23 | 주식회사 씨솔루션 | Device for manufacturing a tab of beverage can |
CN106513457A (en) * | 2016-11-09 | 2017-03-22 | 宝钛集团有限公司 | Preparation method for near-beta titanium alloy disc spring |
-
1979
- 1979-03-02 JP JP2347679A patent/JPS55117521A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100436994B1 (en) * | 2001-05-17 | 2004-06-23 | 주식회사 씨솔루션 | Device for manufacturing a tab of beverage can |
CN106513457A (en) * | 2016-11-09 | 2017-03-22 | 宝钛集团有限公司 | Preparation method for near-beta titanium alloy disc spring |
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